Power unit



' June 30, 1931. .J. R. coLE 1,812,258 Y POWER UNIT I Filed Nov. 11, 1927 2 Sheets-Sheet 1-" June 30, 1931. .1. R. COLE POWER UNIT Filed Nov. 11, 1927 2 Sheets-Sheet 2- 30 parts throughout the several views,

Patented June 3o, 1931:

f F FI i r wm UNIT v Application filed Noveni ber 11,;1'927. semi 232,679,

invention relates to improvements oil well pumping apparatus, "and has for object to provide [an-equipment whereby an ordinary standard rig may be employed to pum ja plurality'of wellsf, I I I A furtherobje'ct (army invention is-to pro+ I I I to theinud sills and to the rear jack post sill represents the conventional walking beam I pivotally mounted on top of the Sampson '1 r I post 5 bynieans of the usual center irons 7 60 'vide Oil wen, .pqmping power. wherein the band wheel shaft, orequivalent shaft, is hori- V z'ont'al, andwhich' in itself isa complete power unit, si m ple in operation and construction, capable of having abalanc ed stroke with an I 7 I equal distribution of thestrain, and adapted to Pu p more anddeeperwells thanis 11 possible jth-. u h g ,I v I provide apparatus of the above-type; comparati'vely' inexpensive, conveniently i and i high salvage value.

I VVitlithe above and other objectslin view which will appear as the .des criptionxpro ceeds, my'invention Consists in the novel features hereinafter set forth in detail, illustrated in the accompanying drawings, and more particularly pointed out in the ap pended claims.

. Referring to the drawings; in which nua I merals of like character designate similar F1g.'-1 'is a view'ofthe apparatus inside 1 elevatiomshowing a complete eight well connection power in which the pitman is used to pump the'well at which theipoweris loerating the walking. I I I I ingintegral projections or armsf18,-the upper cated, 'said pitman op beam in' th'eusual manner.

*FigQis'a topplanview.ofthe'apparatus, I I I I I. II I I shaftof the sprocket wheel 19 which-1s rotat j wheel and deflectors. I

showing the relative positions of the band Fig. his a similarview of one of the-rigid deflectors. 1 1 Fig. 5 isa side View of amodified'form of wrist-piniron, or wrist pin connectin'g'plate. Fig.6 is a top view of the same, and Fig. 7 isa-modified form of deflector swivel or connection.

In the drawings, lrepresentsthemain sill of the rig resting on apluralityiof mud sills A still further object of inventionisto the wrist pins 13, Iprovidevertically extend; ing connectingplates or wrist pin irons plane of the plum hdine of the, axis of the hand wheel shaftLIO, when: the" pull. enme- 'chainisf'on center. yThlS style of deflector s'ide'of the eraiikfloca'ted in the same relative o rep re sents anadditional sill upon whichj deflectors may befa'stenedandwhich is bolted Rotatably mounted'on thefsillsl and 3,1 in

lsuitablejbearings .0 11 the conventional jack.

posts 9,' is a hand wheel 8'which may be driven I from any sourceof'power, not"shown. From either end of the 's'haft 10 which supports-the 5 band wheel. 8. to which it is attached-5 I secure crank levers '1 1aiid'l2set opposing each I other and each having outwardly projecting wrist pins 13 attheir freelends. Swivelled on and'l lf provided: alohgtheir edges with a plurality of apertures 15 adapted to receive connections on the sprocket chain, 'pitniaIn 'an'drro ds, as hereinafter setforth. 1 i 16 designates-a rigid deflectormounted on the sill 4 at a-point thereon where thepull on the sprocket chain run to this ,defleotor will beapproximately forty-five, degr e sfofi' the comprises a base portion17 adaptedto be -secured to the sill to;whichitis attached and having an'gula'rly' disposed upwardly extend;

ends 'ofwhioh areuapertured" to receivethe ably mounted therein, as: shown inFigila Thesprocket wheel 19 ofthe rigid defi'ector I 16 is mountedin line with the movement of; theiwris't pin onthe crane-12;; I V Oaths same s'ill fl, and oil-the "opposite.

position to said crank as'isithe rigid deflector mentioned, I secure. a. swivelledj-deflectorl 20, 1 while on the main sill 1, ontheopposit-sid'e of the rig,.and extendingin ajline'at rig'ht angles to the axis oithe bandwheel vshaft 10, I mounttwo swivelled deflectors-21 and Q2, 4

one on either side of said shaft, and each being located so that the pull on the sprocket chain passing through them will be approximately forty five degrees off the plane of the plumb line of the axis of the. shaft when the pull on the chain is on center. Another swivelled deflector 23 is attached to the main sill 1 in. the plane of the plumb line of the axis of the shaft 10. Each of the swivelled deflectors comprises a base member 24, adapted to be secured firmly to the sills whereon they are located, and having swivelled thereto, on a shaft 24, an angularly disposed upwardly extending sprocket wheel frame 25, in which is rotatably mounted a sprocket wheel 26, see Fig. 3. If desired, these deflectors both rigid and swivelled, may be provided with a casing or guard 27, as clearly shown in the drawings in Fig. 3 and Fig. 4.

In Fig. 7, I have shown a modified form of swivelled deflector, comprising a base 36 having an upwardly projecting, laterally disposed ring 37 on the upper surface thereof, and a sprocket wheel yoke 38 provided with a hook member 39 at its lower extremity, and adapted to be hooked into said ring 37, whereby freedom of movement in any direction is afforded. when power is applied to the chain running over the sprocket wheel mounted in said yoke. However, the form of deflector shown in Figs. 3 and 4: is preferable to the one shown in Fig. 7 as with the deflector swivelled on a journal it can swivel only in a fixed plane and the tangent of pull from deflector to pitman head will remain substantially in the plane generated by the movement of the pitman head.

Secured by connections in the proper apertures, as shown at 15, in the wrist pin irons or plates 14 and 14, on the wrist pins of the cranks 11 and 12, is a plurality of chains which engage and run on the sprocket wheels as follows. The chain 28 runs from 1 1 to the rigid deflector 16, while the chain 29 runs to the swivelled deflector 20, and the chains 30, 31 and 32 run from plate 14 to the swivelled deflectors 21, 22 and 23 respectively, as clearly shown in Figs. 1 and 2 of the drawings.

The chains are connected at their other ends by means of suitable connections, to rod lines running to the pumping jacks at the wells to be pumped through the use of these deflectors, and the rod lines are disconnected from the power by the conventional hook off or knock off.

33 and 34 designate rod lines to pumping jacks directly connected to plate 14 swivelled on the wrist pin of crank 12, the connection being made in apertures as at 15, which said rod lines pull in a horizontal direction, and are capable of being disconnected in the usual manner. 35 represents the pitman connection between the walking beam 6 and the crank 11, and comprises a rod connected in an aperture such as shown at 15, in plate 14 on the wrist pin on said crank.

It is obvious that instead of the pitman rod, such as shown in the drawings, being used, the regular pitman such as is used on a standard rig may be employed, in which event the chains 30, 31 and 32 could be directly connected to the pitman itself.

It is also evident that instead of using cranks and wrist pins as shown, conventional eccentrics on the band wheel shaft could be employed to impart the reciprocating motion to the pitman or pitman rod 35, rods 33 and 3 1, and the chain mentioned.

It is further apparent that the rigid and swivelled deflectors may, in certain instances, be used interchangeably, the use of the particular kind at any particular place being governed by individual conditions. Furthermore, that the deflectors need not be mounted on or attached toany of the sills mentioned but may be secured to a foundation or mounted in any other manner suitable to stand the strain. Moreover, it is obvious that while the use of a sprocket wheel and sprocket chain has some advantage over other means to deflect he pull on the wrist pin, so that it may come at the required angle with reference to the line of pull on the other rods, chain or pitman, to give an equal distribution of power impulses or strains throughout the revolution of the band wheel, yet means other than a sprocket wheel and chain could be employed. Cable or wire line could be used in a pulley or sheave. A segment of a circle instead of a wheel could be employed, and even a lever or two used to deflect the pull on the rod line, could be used.

Furthermore, it is obvious that if it is not desired to pump the well at which the rig power is located, through the use of the pitman and walking beam 6, that the pitman may be dispensed with, and the well put on a jack with the rod line run through a deflector located on the main sill and forward of the band wheel shaft. In this even, to make up for the loss of the pitman connection, and in its plac and to balance the power as before. another deflector is located in the plane of the plumb line of the axis of the band wheel shaft and between the deflectors 16 and 20, and connection made to the wrist pin iron or plate on the wrist pin on crank 12, and a red line run from this. As the pull on the shaft is vertical, the same as the pull by the pitman, and as the two cranks are opposed, the substitution is perfect.

The operation of my invention is as follows:

The band wheel 8 is set into operation, ro tating in the direction of the arrow, Fig. 1, causing the shaft 10 to rotate in its bearings, which in turn revolves the crank levers 11 and 12 around the axis of said shaft. This causes the swivelled plates 14 and 1 mount- 1 id' 111' @911: Qtseid crank levers, eccen r wi h respect tothe said :wvheel 8, to rotate an i p-w o c a ng motiqn t th pitinan 35, the rods 33 and 35L, 'bllG'C-hitlIlS h th h in--2 8a s l tcsi lin w the retatio Qfthc slaidac enkm n planet t e lQ-VQ II QI of th ri t p w dcr nk, and theref r 'the d fle or 16m? 'rigi but as he emain e fthc chains varedirected. to Wells at different anglesto the rqtation: fthe. cr n and ban -wheels aforesaid, it isnecessary toernploy, swivel'led d ct rs.- ch utom i a y wm in alignment on then swivels as power 1s appliedto the unit. It is'not necessary that he i wivclled d fle t se a igh gles to the plane 0f" ew1i 'pi movemen 'as'i's shown in theidrawings, although with this setting the a1ignI l Ilt/v is=perfeet,,but if the @fle tors re t at any ngle, the play out of line-is, t gre t'enjo gh tq Tend r. he-s tting impr cti l 1 a I j r t It; will be seen that :I-have pro videdZ-an eight welleonnection balanced power unit,

which may 'beilouiltas'af. unit or with the means of which astandard rigmay-be con- 1 verte'd into power as; shown} f Thisinven- 5 divided "power impulse 01:" strain "Also tion-permits the revolution off the band'wheel o ba d W el. haft,v to e idividedinto as many equal parts asthere are wellgconnec I v operate one wellthroughfthis deflector. Contions-to hemadeto the power, sothat each well wilLbe picked up-inrsequence equally each well tinithis'q instance} as, in; all cases where an even number ofiwell eonnections are m de is. ba an e w th: another well; at all times, as connection ,ofise-ts conneetio'Ii 32', 33v offsets, 3.4;, 28. balances with 30 and 29 with 'Myinvention'hQWever ifsnot: limited to an ight: Well co nection powe from two o eight welljconnections-rmay behad' ithsub-f st ntia y; th s me. res lts? by using "one or 3 more; deflectors-properly;positioned withre lation, one to the otherandytothe eranks; eniploying the deflectors either with; or withont thepitrnan; alsiWilLlo'e illustrated. Thereare hundreds of combinations" availab1e,s but only onefor each number otwell, connections will-be mentioned, in the iollowingf arrange? ments: J I3 For two-wells: se, the regular; standard pitnianiin the usualway to pumpon the beam. aSet; the deflector on the lnain sill in the planeof theplurn b line ofthe axis ofthe band; wheel. shaft,- fGonnect the chainiused with this deflector; to :the pit nan direet, and pump: th p 1 t rough" t e deflec on ls equnc e one mama-awn o the band wheel, This is, particularly onidecp, Wells; nadm m We? en ing he eco d W l to a red line thatoperates in'a horizQn'tal di-f rection,-as with the use of the deflector-the 1 strairi is vertical and the rig is-not pulled to pieces. If the second well to be pumped'is other" side oiithe the crank 12is used yin which instancejjthe two-pranks 1'1 operating-the p-itma n and 12,-the deflector,

niust he set parallel to each other, that is in vthe same direction, instead of beingloppesed to each other as shown in the drawingsfor an IF I eight well connection power. 7

Forathree I ll conn ectioniz Usetheregular mately-BOdegrees .1011 the plumb li e, Qfthe shaft,- locating bothon one fside-ofthe rig or one on each side, depending upon the direction in which the rod lines run to vthe two additional wellsvto -bepumped'. Each well i's'picked: up, in sequence, atone-third revolus V Ition 10f thesband wheel. ,If the-crank 12 is 'ern plovyed, as; would necessarily be; the case nal well on the beam in the usual manner.

so pitman and twodeflectors placed at approx-i- Place the crank 12 inv line with thepitman 'crankll, and not opposed to it as it appears I the drawings, locate one .defieotor under the crank 12 in the planeof the plumb line ing it to the mud-sill under the jack post, and

nect the remaining tw'o wells torod lines-as v shownat and 34:. Each well ispicked llp in; sequence at one-fourth revolu-tionjof the bandswheel; The two wells onrod lines 33 counterbalance each other.

pitrrian well and the deflector well likewise Eif wellconneotionz Use t e regularpitman and four deflectqrs. properly, positioned fire equa p s W eh: W l- Y P c e Liip o e-fif h of heire'v u iq Th t- Q ra k should be set opposed to. each other,1;as' is h i n i n' fd f o an ght 9 conn c:

as -te divideitheband wheelrevolution into V six equal parts where eachwellwillfbe picked upon one-sixth revolution and with the two cranks set opposed. to each other-l; or: setthe cranks opposed to each other, eliminate the i tman; and: set three deflectors oiL one side and lthree, on lthe other," and pump the well j which rd narily o d be pump q ev een; h ou h he itmeeq ne tiea w th:

two oinj 'each side "ofthe rig-sothat the revolu- V tiori Golf ,the ibahd Wheel, will be divided. into if one onboth of the deflectors were placed 9 on that side of the rig,,the two cranks must of'theaxis of the band wheel shaft; by attach l 1 a jack operated through the deflector located on the main sill 1 in front of the crank 11, the deflectors being so spaced that the wells are picked up in sequence of one-sixth revolution of the band wheel.

Seven well connection: Use the same arrangement as for the eight well connection shown in the drawing, and use the conventional stone boat or dummy in place of the eighth well, so that all wells will be counterbalanced.

Eight well connection: The same as shown in the drawings.

It will be noted that I have provided a portable apparatus, easily moved from one place to another, and requiring no expensive foundation as in powers heretofore known. My apparatus may be used with equal effect for pumping several wells on a drilling machine, or on any rig or machine having the shaft in horizontal position. It need hardly be mentioned that with the deflectors and wrist pin irons shown, and the necessary con nections, the ordinary standard rig can be quickly converted into a balanced power unit.

From the foregoing. it is believed that my invention may be readily understood by those skilled in the art without further description, it being borne in mind that changes may be made in the detailsdisclosed without departing from the spirit of the invention as expressed in the claims.

What I claim and desire to secure by Letters Patent is:

1. A power unit comprising a base member, a vertically extending post secured thereto and having rocker arm mounted on the top thereof, a power driven band wheel on said base member, a horizontal shaft supporting said wheel and rotatable therewith, a crank lever fixed on each end of said shaft and provided with a wrist pin at its free end, a vertical connecting plate rotatable on each of said wrist pins, pull deflectors, comprising sprocket wheels, mounted on said base on either side of said band wheel, and sprocket chains connected to said plates on the wrist pins, and engaging said deflector sprocket wheels, from whence they run to a plurality of well pumps located at different points around said unit, and with a pitman connecting one of said plates with said rocker-arm.

2. A power unit for pumping oil wells, consisting of a rotatably mounted substantially horizontal shaft and means of rotating the same; a gyratory member on said shaft and actuated thereby; a flexible power element connected with said gyratory member and adapted to also be connected to a rod line to pump a well; and means located. at said power unit and positioned below the horizon of said shaft and adapted to change the direction of the movement of said flexible power element from any of its radial positions relative to said gyratory member, to a substantially straight line position within the plane generated by the motion of the gyratory member.

3. A power unit for pumping oil wells, consisting of a rotatably mounted substantially horizontal shaft and means of rotating the same; a gyratory member on said shaft and actuated thereby; a flexible power element connected with said gyratory member and adapted to also be connected to a rod line to pump a well; and means located at said power unit and positioned below the horizon of said shaft and adapted to change the direction of the movement of said flexible power element from any of its radial positions relative to said gyratory member, to a substantially straight line position which is outside of the plane generated by the motion of the gyratory member.

4. A power unit for pumping oil wells, con sisting of a rotatably mounted substantially horizontal shaft and means of rotating same; a gyratory member on said shaft and actuated thereby; a plurality of power transmitting elements attached to said gyratory member, one of which said elements is flexible; and a deflecting means located at said power unit and positioned below the horizon of said shaft and adapted to be cooperatively associated with said flexible power transmitting element whereby its motion is deflected from any of its radial positions relative to said gyratory member, at an angle within the plane generated by the motion of said gyratory member.

5. A power unit for pumping oil wells, consisting of a rotatably mounted substantially horizontal shaft and means of rotating same; a gyratory member on sald shaft and actuated thereby; a plurality of power transmitting elements attached to said gyratory member, one of which said elements is flexible; and a deflecting means located at said power unit and positioned below the horizon of said shaft and adapted to be cooperatively associated with said flexible power transmitting element whereby its motion is deflected from any of its radial positions relative to said gyratory member, to a direction outside of the plane generated by the movement of said gyratory member.

6. A power deflector thru which a rod line may be operated to pump an oil well by a power unit of the type hereinafter set forth, with said power deflector adapted to be attached to any suitable foundation and to be positioned at the base of said power unit and below the horizon of the shaft thereof, which said power unit is of the style consisting of a horizontally disposed and revolvably mounted shaft and means of revolving the same, and a crank on said shaft and a wrist pin on said crank and a pitman head on said wrist pin, and with means on said pitman 7 head for connecting theretoa rod line mem ber of the aforesaid rod line; a flexible power transmitting means provided in said power deflector adapted tojbe connected to said o a balanced power to pump a'pluralityl of wells by distributing the pumping strains on said a pitman head andto said rod line; and means i provided in said power "deflector for engaging said flexible power transmitting mem; her and for deflecting-the pull ofthe same 1'0 downwardly from said'pitman head; substantially in the plane generatedby themovement of said pitman head; and means also provid- L ed in said power deflector for deflecting'said downward pull: of said flexible power transmitting member out of the plane generatedby a I I 1 the movement of said pitman head. 5 L a l v v 7. A'n'apparatus adapted to belattached to the ordinary standard rig used for pumping 10L A power deflector claimediniclaim yoke swiveledon a 'journalheld on a base plate adapted to be attached'to theaforesai'd In testimonywhereof I affix my si nature; I JAMES R. 0 LE.=

oil wells and having'a horizontal shaft with i l I hand wheel thereon anda crank on one end of Y said shaft anda wristpin on said crank,and; j \I i a walking beam mounted at the rig and a pitman connecting said walking beam with said wrist pin, and with said rig also "having a I crank on theotherend of said shaft and a V V i wristpin onsaid'crank; an apparatus as afore v said adapted .to convert said standard rig into wells at equal intervals thruout the course of the revolution ofsaidf shaft, said apparatus consisting of a multiplepitman'headadapte ed: to. be rotatab-ly mountecl on thelast named wrist pin and provided Witha. plurality of 1.

connections for rod lines two of; whichcon-. nections are adapted to receive/rod l1nesjd1- rectedto said connections in'a substantially horizontal plane and another of which said i connections is adapted to receive a rod line;

,4o' directed to it from below; "asflexible power element attached to said last namedpitinan head connection and adapted to be connected 7 to a rod line; a power deflector adapted to-be V secured to any suitable foundation-at the base f of said standardrig a d o below the horizon of the shaft thereof and with said power deflectorprovided with means for engaging said fiexible power element-and adapt- 7 ed, to change its direction of movement to Q a substantially horizontal position within the plane generated by the movement, of' said y pitman head.

" 8. "An apparatus asjclaimedin claim? and with said power deflector also providedwith means for deflecting the. movement of said [flexible vpowei' elem ent outside ofvthe' plane I generated b y th'e movement offsaid'pitman head. Y

attached to the'afore'said foundation; and

with said wheel adaptedto engage saidfiexible power element; 7 i 1 '6, and wherein said means provided in said] power deflector for deflecting the pull as c aforesaid, is a 'wheel'rotatably mounted in a foundation, and with said wheel adapted to 5 engage said flexible power element. i 

